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EL2090

更新时间： 2024-11-22 22:50:55
品牌 Logo 应用领域
英特矽尔 - INTERSIL 视频放大器
页数 文件大小 规格书
11页 150K
描述
100MHz DC-Restored Video Amplifier

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EL2090 数据手册

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August 1995, Rev. A  
FN7040  
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100MHz DC-Restored Video Amplifier  
Features  
The EL2090 is the first complete DC-  
restored monolithic video amplifier  
sub-system. It contains a very high-  
• Complete video level restoration system  
• 0.01% differential gain and 0.02° differential phase  
accuracy at NTSC  
quality video amplifier and a nulling sample-and-hold  
amplifier specifically designed to stabilize video  
• 100MHz bandwidth  
performance. When the HOLD logic input is set to a logic 0  
• 0.1dB flatness to 20MHz  
during a horizontal sync, the sample-and-hold amplifier may  
be used as a general-purpose op-amp to null the DC offset  
of the video amplifier. When the HOLD input goes to a logic  
1 the sample-and-hold stores the correction voltage on the  
hold capacitor to maintain DC correction during the  
subsequent scan line.  
• Sample-and-hold has 15nA typical leakage and 1.5pC  
charge injection  
• System can acquire DC correction level in 10µs, or 5 scan  
lines of 2µs each, to 1/2 IRE  
• V = ±5V to ±15V  
S
The video amplifier is optimized for video characteristics,  
and performance at NTSC is nearly perfect. It is a current-  
feedback amplifier, so that -3dB bandwidth changes little at  
various closed-loop gains. The amplifier easily drives video  
signal levels into 75Ω loads. With 100MHz bandwidth, the  
EL2090 is also useful in HDTV applications.  
• TTL/CMOS hold signal  
Applications  
• Input amplifier in video equipment  
• Restoration amplifier in video mixers  
The sample-and-hold is optimized for fast sync pulse  
response. The application circuit shown will restore the video  
DC level in five scan lines, even if the HOLD pulse is only  
2µs long. The output impedance of the sample-and-hold is  
low and constant over frequency and load current so that the  
performance of the video amplifier is not compromised by  
connections to the DC restore circuitry.  
Ordering Information  
PART  
TEMP.  
NUMBER  
RANGE  
PACKAGE  
14-Pin PDIP  
16-Pin SOL  
PKG. NO.  
MDP0031  
MDP0027  
EL2090CN  
EL2090CM  
0°C to +75°C  
0°C to +75°C  
The EL2090 is fabricated in Elantec's proprietary  
Complementary Bipolar process which produces NPN and  
PNP transistors with equivalent AC and DC performance.  
The EL2090 is specified for operation over the 0°C to 75°C  
temperature range.  
Pinouts  
EL2090  
(16-PIN SOL)  
TOP VIEW  
EL2090  
(14-PIN DIP)  
TOP VIEW  
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.  
1
1-888-INTERSIL or 321-724-7143 | Intersil (and design) is a registered trademark of Intersil Americas Inc.  
Copyright © Intersil Americas Inc. 2003. All Rights Reserved. Elantec is a registered trademark of Elantec Semiconductor, Inc.  
All other trademarks mentioned are the property of their respective owners.  
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